Whitacre and pencil-point spinal needles: some points to consider.
Carrie
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D000775:Anesthesia, Spinal / Q000295:instrumentation*; D004867:Equipment Design; D006261:Headache / Q000517:prevention & control; D006801:Humans; D009339:Needles; D011183:Postoperative Complications / Q000517:prevention & control